The Law of Unintended Outbreak – Who Is at Risk from Petya?

Issued by: Trend Micro Blog

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Hot on the heels of the global WannaCry outbreak in May, yesterday saw a wave of what looked like copycat malware sweeping the globe again. However, on closer inspection there may more to this than meets the eye, more than a simple new variant of an already established ransomware borrowing propagation techniques from WannaCry.

The attack itself certainly seems to have been originally planned as a targeted attack, originating with a compromise of Ukrainian accounting software MEDoc’s update infrastructure (seemingly admitted on their website but categorically denied by MEDoc on facebook).